package com.atguigu.gulimallcart.controller;

import com.atguigu.gulimallcart.service.CartService;
import com.atguigu.gulimallcart.vo.Cart;
import com.atguigu.gulimallcart.vo.CartItem;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {

    @Autowired
    CartService cartService;
    @GetMapping("/currentUserCartItems")
    @ResponseBody
    public List<CartItem> getCurrentUserCartItems(){

        return cartService.getUserCartItems();
    }


    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){
        cartService.deleteItem(skuId);


        return "redirect:http://localhost:30000/cart.html";
    }


    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId,
                            @RequestParam("num")Integer num){
        cartService.changeItemCount(skuId,num);


        return "redirect:http://localhost:30000/cart.html";
    }


    @GetMapping("/checkItem")
    @ResponseBody
    public void CheckItem(@RequestParam("skuId") Long skuId,
                            @RequestParam("check")Integer check){
        cartService.checkItem(skuId,check);
    }

    /**
     *浏览器有一个cookie：user-key；标识用户身份，一个月后过期
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {

        //快速得到用户信息
 //       System.out.println(userInfoTo);
        Cart cart = cartService.getCart();
        model.addAttribute("cart",cart);

        return "cartList";
    }


    /**
     * 添加商品到购物车
     * RedirectAttributes将数据放到session里边可以在页面上取出,只能取一次
     * @return
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes ra) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId,num);
        ra.addAttribute("skuId",skuId);
        return "redirect:http://localhost:30000/addToCartSuccess.html";
    }


    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model) {

        //重定向到成功页面
        CartItem item = cartService.getCartItem(skuId);
        model.addAttribute("item",item);

        return "success";
    }


}
